The Marina Bay Condominiums in Barrie, Ontario, is an upscale complex overlooking Lake Simcoe’s Kempenfelt Bay. Marina Bay’s two condo towers are built above and adjacent to a shared parking garage. Understandably, Marina Bay residents place a high value on indoor parking during cold Canadian winters. Twenty-four hour access to the garage is expected and non-negotiable. There is only one two-lane ramp into the garage which cannot be closed.
A drain at the bottom of one of the ramps was leaking. The existing hot rubberized asphalt waterproofing had failed. The concrete was crumbling and excess water had actually rusted through underground pipes. The repair needed to be done immediately and the local asphalt plants were about to close for the winter. If they didn’t get the new pavement installed soon, the entire repair would have to wait until spring. Being nearly Christmas, the property owner also wanted the project completed quickly to minimize disruption to the residents.
Norquest Contracting Group Ltd. knew TREMproof® CRA (Cold Rubberized Asphalt) was the perfect answer to this complex problem. The building was occupied, so hot rubberized asphalt was ruled out because of the odor. Norquest briefly considered another waterproofing product, but decided it was too moisture-sensitive for the Ontario climate and would require a longer cure time. With only one access point to the garage, the job needed to get done and open as soon as possible.
The contractors removed the existing concrete, replaced the drain assembly and poured a high-strength, low water-content concrete. Just 24 hours later, they applied TREMproof CRA to the green concrete. TREMproof CRA is a catalyzed product that cures even in cold conditions and over damp substrates. At the time of the project, the outside temperature hovered around 0 degrees C. With TREMproof CRA in place, the Norquest contractors added a layer of fiberboard and paved the repaired section. Within three days, the job was done and plans for repaving the entire garage next year now include TREMproof CRA.
TREMproof CRA (Cold Rubberized Asphalt) is the next generation of asphalt-based waterproofing. Its unique chemistry makes it the ideal high-build system for critical below-grade and split-slab waterproofing applications where additional membrane thickness is required.